threading bugfixes and improvements

source/net/sourceforge/filebot/ui/FileBotPanelSelectionList.java

@@ -16,6 +16,7 @@ import javax.swing.DefaultListModel;
 import javax.swing.JList;
 import javax.swing.ListSelectionModel;
 import javax.swing.SwingConstants;
+import javax.swing.SwingUtilities;
 import javax.swing.Timer;
 import javax.swing.border.EmptyBorder;
 
@@ -90,6 +91,9 @@ public class FileBotPanelSelectionList extends JList {
 
 		public void actionPerformed(ActionEvent e) {
 			selectEnabled = true;
+			
+			// bring window to front when on dnd
+			SwingUtilities.getWindowAncestor(FileBotPanelSelectionList.this).toFront();
 		}
 		
 

source/net/sourceforge/filebot/ui/panel/sfv/ChecksumComputationExecutor.java

@@ -22,10 +22,10 @@ public class ChecksumComputationExecutor {
 	
 	private static final int MINIMUM_POOL_SIZE = 1;
 	
-	private boolean active = false;
+	private Boolean active = false;
 	private long lastTaskCount = 0;
 	
-	private static ChecksumComputationExecutor instance = null;
+	private static ChecksumComputationExecutor instance = new ChecksumComputationExecutor();
 	
 	private LinkedBlockingQueue<ChecksumComputationTask> workQueue = new LinkedBlockingQueue<ChecksumComputationTask>();
 	
@@ -48,25 +48,20 @@ public class ChecksumComputationExecutor {
 	};
 	
 	
-	private ChecksumComputationExecutor() {
+	public static ChecksumComputationExecutor getInstance() {
-		
-	}
-	
-
-	public static synchronized ChecksumComputationExecutor getInstance() {
-		if (instance == null)
-			instance = new ChecksumComputationExecutor();
-		
 		return instance;
 	}
 	
 
 	public void execute(ChecksumComputationTask task) {
-		setActive(true);
+		synchronized (workQueue) {
+			setActive(true);
+			
+			adjustPoolSize();
+			
+			executor.execute(task);
+		}
 		
-		adjustPoolSize();
-		
-		executor.execute(task);
 		fireActiveSessionTaskCountChange();
 	}
 	
@@ -78,7 +73,7 @@ public class ChecksumComputationExecutor {
 		// for only a few files, use only one thread
 		// for lots of files, use multiple threads
 		// e.g 200 files ~ 1 thread, 1000 files ~ 2 threads, 40000 files ~ 4 threads
-		int recommendedPoolSize = (int) Math.max(Math.log10(Math.max(workQueue.size(), 1)), MINIMUM_POOL_SIZE);
+		int recommendedPoolSize = (int) Math.log10(Math.max(workQueue.size(), 1) + MINIMUM_POOL_SIZE);
 		
 		if (executor.getCorePoolSize() != recommendedPoolSize)
 			executor.setCorePoolSize(recommendedPoolSize);
@@ -107,22 +102,24 @@ public class ChecksumComputationExecutor {
 	}
 	
 
-	private synchronized void setActive(boolean b) {
+	private void setActive(boolean b) {
-		if (this.active == b)
+		synchronized (active) {
-			return;
+			if (this.active == b)
-		
+				return;
-		this.active = b;
-		
-		if (!this.active) {
-			// end of active computing session
-			lastTaskCount = executor.getTaskCount();
 			
-			// reset pool size
+			this.active = b;
-			adjustPoolSize();
+			
+			if (!this.active) {
+				// end of active computing session
+				lastTaskCount = executor.getTaskCount();
+				
+				// reset pool size
+				adjustPoolSize();
+			}
+			
+			// invoke property change events on EDT
+			SwingUtilities.invokeLater(new FirePropertyChangeRunnable(ACTIVE_PROPERTY, null, active));
 		}
-		
-		// invoke property change events on EDT
-		SwingUtilities.invokeLater(new FirePropertyChangeRunnable(ACTIVE_PROPERTY, null, active));
 	}
 	
 
@@ -160,6 +157,20 @@ public class ChecksumComputationExecutor {
 	}
 	
 
+	public void clear() {
+		synchronized (workQueue) {
+			executor.purge();
+			workQueue.clear();
+			
+			adjustPoolSize();
+			
+			if (executor.getActiveCount() == 0) {
+				setActive(false);
+			}
+		}
+	}
+	
+
 	public void addPropertyChangeListener(PropertyChangeListener listener) {
 		propertyChangeSupport.addPropertyChangeListener(listener);
 	}

source/net/sourceforge/filebot/ui/panel/sfv/ChecksumRow.java

@@ -3,6 +3,7 @@ package net.sourceforge.filebot.ui.panel.sfv;
 
 
 import java.io.File;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.regex.Matcher;
@@ -77,6 +78,11 @@ public class ChecksumRow {
 	}
 	
 
+	public Collection<Checksum> getChecksums() {
+		return checksumMap.values();
+	}
+	
+
 	public void putChecksum(File columnRoot, Checksum checksum) {
 		checksumMap.put(columnRoot, checksum);
 	}

source/net/sourceforge/filebot/ui/panel/sfv/SfvTableModel.java

@@ -30,11 +30,6 @@ public class SfvTableModel extends AbstractTableModel {
 	private int checksumColumnsOffset = 2;
 	
 	
-	public SfvTableModel() {
-		
-	}
-	
-
 	@Override
 	public String getColumnName(int columnIndex) {
 		if (columnIndex == 0)
@@ -152,16 +147,16 @@ public class SfvTableModel extends AbstractTableModel {
 	
 
 	public synchronized void clear() {
+		
 		// stop any running computations
 		for (ChecksumRow row : rows) {
-			for (File columnRoot : checksumColumnRoots) {
+			for (Checksum checksum : row.getChecksums()) {
-				Checksum c = row.getChecksum(columnRoot);
+				checksum.cancelComputationTask();
-				
-				if (c != null)
-					c.cancelComputationTask();
 			}
 		}
 		
+		ChecksumComputationExecutor.getInstance().clear();
+		
 		checksumColumnRoots.clear();
 		rows.clear();
 		rowMap.clear();

source/net/sourceforge/filebot/ui/panel/sfv/SfvTransferablePolicy.java

@@ -6,14 +6,12 @@ import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.InputStreamReader;
-import java.util.ArrayList;
 import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 import net.sourceforge.filebot.ui.FileFormat;
 import net.sourceforge.filebot.ui.transferablepolicies.BackgroundFileTransferablePolicy;
-import net.sourceforge.filebot.ui.transferablepolicies.FileTransferablePolicy;
 import net.sourceforge.filebot.ui.transferablepolicies.MultiTransferablePolicy;
 
 
@@ -30,7 +28,7 @@ public class SfvTransferablePolicy extends MultiTransferablePolicy {
 	}
 	
 	
-	private class SfvFilePolicy extends FileTransferablePolicy {
+	private class SfvFilePolicy extends BackgroundFileTransferablePolicy<SfvTableModel.Entry> {
 		
 		@Override
 		protected boolean accept(File file) {
@@ -45,6 +43,28 @@ public class SfvTransferablePolicy extends MultiTransferablePolicy {
 		}
 		
 
+		@Override
+		protected void process(List<SfvTableModel.Entry> chunks) {
+			tableModel.addAll(chunks);
+		}
+		
+
+		@Override
+		protected boolean load(List<File> files) {
+			synchronized (ChecksumComputationExecutor.getInstance()) {
+				ChecksumComputationExecutor.getInstance().pause();
+				
+				for (File file : files) {
+					load(file);
+				}
+				
+				ChecksumComputationExecutor.getInstance().resume();
+			}
+			
+			return true;
+		}
+		
+
 		@Override
 		protected boolean load(File sfvFile) {
 			
@@ -54,8 +74,6 @@ public class SfvTransferablePolicy extends MultiTransferablePolicy {
 				String line = null;
 				Pattern pattern = Pattern.compile("(.*)\\s+(\\p{XDigit}{8})");
 				
-				ArrayList<SfvTableModel.Entry> entries = new ArrayList<SfvTableModel.Entry>(50);
-				
 				while ((line = in.readLine()) != null) {
 					if (line.startsWith(";"))
 						continue;
@@ -68,21 +86,17 @@ public class SfvTransferablePolicy extends MultiTransferablePolicy {
 					String filename = matcher.group(1);
 					String checksumString = matcher.group(2);
 					
-					entries.add(new SfvTableModel.Entry(filename, new Checksum(checksumString), sfvFile));
+					publish(new SfvTableModel.Entry(filename, new Checksum(checksumString), sfvFile));
 					
 					File compareColumnRoot = sfvFile.getParentFile();
 					File compareFile = new File(compareColumnRoot, filename);
 					
 					if (compareFile.exists()) {
-						entries.add(new SfvTableModel.Entry(filename, new Checksum(compareFile), compareColumnRoot));
+						publish(new SfvTableModel.Entry(filename, new Checksum(compareFile), compareColumnRoot));
 					}
 				}
 				
 				in.close();
-				
-				if (!entries.isEmpty()) {
-					tableModel.addAll(entries);
-				}
 			} catch (Exception e) {
 				e.printStackTrace();
 				return false;
@@ -124,22 +138,26 @@ public class SfvTransferablePolicy extends MultiTransferablePolicy {
 			if (files.isEmpty())
 				return true;
 			
-			ChecksumComputationExecutor.getInstance().pause();
+			synchronized (ChecksumComputationExecutor.getInstance()) {
-			
+				ChecksumComputationExecutor.getInstance().pause();
-			File firstFile = files.get(0);
-			
-			if ((files.size() == 1 && firstFile.isDirectory())) {
-				for (File f : firstFile.listFiles())
-					load(f, firstFile, "");
-			} else {
-				File columnRoot = firstFile.getParentFile();
 				
-				for (File f : files)
+				File firstFile = files.get(0);
-					load(f, columnRoot, "");
+				
+				if ((files.size() == 1 && firstFile.isDirectory())) {
+					for (File f : firstFile.listFiles()) {
+						load(f, firstFile, "");
+					}
+				} else {
+					File columnRoot = firstFile.getParentFile();
+					
+					for (File f : files) {
+						load(f, columnRoot, "");
+					}
+				}
+				
+				ChecksumComputationExecutor.getInstance().resume();
 			}
 			
-			ChecksumComputationExecutor.getInstance().resume();
-			
 			return true;
 		}